Machine for grinding and polishing the edges of plates of glass, marble and the like.



No. 882,115. PATENTED MAR. 17, 1908.

' V. KINON. MACHINE FOR GRINDING AND POLISHING THE EDGES OF PLATES OFGLASS, MARBLE, AND THE LIKE.

APPLIOATION FILED FEB. 18, 1907.

5Q 5 525 21 5'5 2: 28 36 Z7; "5? rl-Z n zgt 116]; 50 z2.

151 6 1ft 1," 5 :EE-E- [=1 15 1 V) witneyses: Inventor: QUzlci'orl'iinon j. W. P %/W .H't't orney.

UNITED STATES PATENT OFFICE.

VICTOR KINON, OF AIX-LA-CHAPELLE, GERMANY.

MACHINE FOR GRINDING AND POLISHING THE EDGES oF'PLA'rEs Grass, MA'RBIZE"'AND THE LIKE;

No. 882,115. Specification of Letters Patent. Patented March 17, i'e'os;Application filed February 18, 1907. Serial No: 357,873.

To all whom it may concern: consists of a frame 11 andthework-table 12Be it known that I, VICTOR KINoN, platehinged to said frame. Thebottom-side of glass manufacturer, a subject of the King of the frame 11is at each endprovided with Prussia, residing at. AiXlaChapelle, 1 0. 19two downwardly projecting arms 13 of Johanniterstrasse, in the Kingdomof Pruswhich each carries'twocaster-wheels l t'a'n'd" 60 sia, Empire ofGermany, have invented certhus support the frame 11. To preventthe tainnew and useful Improvements in Malatter'from leaving'the cross-rails 5the" arms chines for Grinding and Polishing the Edges 13 are madesufficiently long to allow their of Plates of Glass, Marble, and theLike; and retainet plates 15 to project beneath said 10 I do herebydeclare the following to be a full, cross-rails and thus: retain thework-holder 5 clear, and exact description of the invention, on saidcross r'ails. At eaeh'endof the such as will enable others skilled inthe art to frame 11 the ends of a sprocket-chain 16 which it appertainsto make and use the driven by the twosp'rocket-wh'eels 8 are atsame. Itached to the arm 13 located between them,

15 My present invention relates to a machine whereas the intermediatepart of said chain 70 for grinding and polishing the edges of'platespasses through the aperture 17 ofsaid' arm, of glass,tmarble and thelike, but more par- Fig. 3. ticularly to the work-holder of saidmachine. From the foregoing it will th'us' be" seen- The object'in viewis to provide a workthat in order to move the work-holderback holderwhich can not only be adjusted on the and forth on said' cross-rails itwill h e. neces 75 carriage of the machine at rightan les to the sary toturn one or the other ofthe'cranksfi direction of travel of saidcarriage,but-is also in the required direction. provided with resilientabutments and ro- In order to hinge the work-table 12 to the tatableelastic work-piece carriers arranged frame 11,bracket's 18'are'securedto the latter,

upon the Work-table, so that the work-piece and eyes 19 to the undersideof the work- 8b can back out when the grinding disk encountable 12, andthen these bracket'sand eyes ters rougher' projections on the edgesofthe ivotally connected by means ofthe pins 20, plate, andsimultaneously therewith the fricig. 3. This arrangement greatly" SlIIllifies tion between thework-piece and its support the handling of theWorl -piece 21. 1 0 so is reduced to a-minimum, and the difiicultiescure the Work-table 12 in a'horizontah osis5 hitherto encountered inproviding plates of' tion an arm 22 is hinged to each end 0 the largerdimensions with ound edges without frame 11 and provided with alateralslit 23 breaking them are who ly' removed. r for thereception-ofthe pintles24 which 'r'o-'-- In the accompanying drawing:Figure,1' jectfro-m theends'of'the-w'ork table. 'e 'i' is a plan-viewof the machine, partly in secthese arms; 22 are thrown back the". w'ork'9o tion. Fig. 2 is a side-elevation of a carriertable 12 may bebrought'into the position" race with parts of itswalls removed; Fig. 3in 'icated by dotted'li'nes in Fi 3'5 is an end-view of the machine,with parts of he upper face of the wor' '-table' carries the work-tableshown in section. the abutments 25' and the carrier-races26' Thecarriage 1 of the machine is provided for the carriers 27 made ofelasticmaterial. with wheels 2, which run on the rails 3 Each abutment 25consists of'an angular connected at intervals by sleepers 4. Theshoeg28adjustab1 seeuredto the work-table flanges of said wheels areprovided with semiby .means of pint es 29 which fit'into any of circularrooves which snugly embrace the the holes 30 arranged in the end-bars 31and 45 tread of t ecorrespondingly shaped rails 3 in in theintermediatebars23 of the work-table, order to revent any lateral playof the carand of a head 33 whose stem 34-is guided in ria e. ear' eachend of the latter cross-' the vertical leg 35 of the, shoe 28.. To therai s 5 are arranged in pairs and provided front of the head 33 issecured 'an' elastic with brackets 6 in which the shafts 7 of thecushion 36, against which one edge of the 50 sprocket-wheels 8 arejournaled. The shafts work-piece is pressed during the grinding or 7 ofthe foremost sprocket-wheels 8 merge polishing operation, and betweenthe rear of into a single shaft, which extends throughout said head andthe vertical leg- 35 a helical the whole length of the carriage andcarries v s ring 37 is arranged upon said stem 34. at each enda crank 9.On top of saidcrossetween the bars 31 and 32 the carrier races 55 mils 5the work-holder 10 is arranged which are movably arranged at intervalsand in the different subdivisions 38 formed by the division-walls 39 theelastic work-piece carriers .27 are placed. These carriers may have theshape of balls or of rollers, as indicated in Fig. 1.

The arrangement of abutments on the perforated bars 31 and 32, and thearrangement of elastic work-piece carriers in races which may be shiftedtion on the worktable, make it possible that plates of variousdimensions can be accommodated on the work-table in a manner to,practically do away with all breakages, because the resilient abutmentsand the elastic carriers will destroy any shocks and vibrations mosteffectually, no matter in which direction they may act. 0 If now forinstance a plate of glass is to be provided with ground edges, it issimply placed on the elastic carriers 27 and pushed back against thecushions 36, without securing it in any way, and then the work-holderadvanced against the grinding-disk 40 o' erated in any suitable manner,by means 0 turning one of the cranks 9. Should the grinding-wheelencounter exceptionally large projections on the edge of theglass-plate, the latter would be pressed back against the pressure ofsaid helical springs 37 and then gradually pressed forward again by theminto its original position as soon as the projections have been removedby the grinding-disk.

1. A machine of the character described, provided with a Work-holdercapable 0 ing wheeled across the face of the carriage of said machine,resilient abutments arranged upon the face of said work-holder, androtatable elastic work-piece carriers likewise arranged upon the face ofsaid work-holder.

2. A machine of the character described, provided with a work-holdercapable of being wheeledacross the face of the carriage of said machineatright angles to the direction of travel of said carriage, resilientabutments adjustably attached to the face of said workholder,carrier-races likewise adjustably attached to the face of saidwork-holder, and rotatable elastic work-piece carriers running in saidcarrier-races.

3. A machine of the character described, provided with a work-holdermounted upon right angles to the carriage, resilient abutmentsdetachably and to any suitable pos1' rails entering with the carriage ofsaid machine to be wheeled on rails across the face of said carriage atdirection of travel of said adjustably secured to the top of saidworkholder, trough-shaped carrier-races detachably and adjustablymounted on said Workholder, and rotatable elastic work-piece carriersguided in said carrier-races.

4. A machine of the character described, provided with a work-holderconsisting of a frame adapted to travel upon the carriage of saidmachine at right angles to the direction of travel of said carriage anda work-table hinged to said frame and held in a horizontal position byarms pivotallyv connected with said frame, resilient abutments facedwith elastic cushions and detachably and adjustably connected with saidworkholder, carrier-races provided with sub-divisions and adjustablymounted on said work-holder, and rotatable elastic work-piece carriersseparately guided in the sub-divisions of said carrier-races.

5. In a machine of the character described, the combination with thecarriage thereof, of their tread into the grooves of the Wheels of saidcarriage, crossrails arranged in pairs upon the top of said carriage, awork-holder consisting o a frame and a work-table hinged to the latter,arms on said frame passing in a downward direction between saidcross-rails, caster-wheels on said arms for providing a rolling contactbetween the frame of said work-holder and said cross-rails, means forvreventing said work-holder from accidenta ly leaving said carriage,means for moving said work-holder to and fro on said cross-rails,resilient abutments ad'ustably connected with the table of said wor-holder, carrier-races subdivided and adjustably mounted uponfthe tableof

